Can there be a database-agnostic SQL query to fetch top N rows?

Question

We want to be able to select top N rows using a SQL Query. The target database could be Oracle or MySQL. Is there an elegant approach to this? (Needless to say, we\'re dealing w

Answer 1

The big problem, after looking this over, is that MySQL isn't ISO SQL:2003 compliant. If it was, you'd have these handy windowing functions:

SELECT * from
(   SELECT
    RANK() OVER (ORDER BY ) AS ranking,
    ,
    FROM 
)
WHERE ranking <= 


Alas, MySQL (and others that mimic it's behavior, eg SQLite), do not, hence the whole limiting issue.

Check out this snippet from Wikipedia (http://en.wikipedia.org/wiki/Window_function_(SQL)#Limiting_result_rows)
    

             

                                                        
            
            

              
                
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